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BugCanary
OFFENSIVE SECURITY STUDIO

We find your critical bugs before attackers do.

Automated scanners find the obvious. We find the exploitable — auth bypasses, business-logic flaws, privilege escalation, and the chains that turn a small crack into a full compromise. Then we hand you a clear, reproducible report.

Book an assessmentSee a sample finding →

Proven approach across

  • Bug bounty programs
  • Authorized pentests
  • Pre-launch reviews
  • Attack surface map of app.acme.io: 42 endpoints.
  • Scanner noise, set aside: Missing CSP header, Server banner disclosed, Cookie without SameSite, TLS 1.0 enabled, X-Powered-By: Express, jQuery 1.12 detected, Autocomplete on password.
  • Exploit chain: 01 POST /api/signup — fresh account created. 02 role: admin — assigned by default — HIGH. 03 GET /dashboard — full access, no invite. 04 /api/records?org=* — cross-tenant data — CRITICAL.
  • Scan log: $ bugcanary scan --target app.acme.io. [*] mapping attack surface … 42 endpoints. [*] testing auth & access control …. [!] HIGH privileged role assigned at signup. [!] CRITICAL cross-tenant read on /api/records. [✓] report generated — 1 critical, 1 high.

// SAMPLE FINDING

This is what you get.

A representative finding — the kind of critical bug we surface. Clear severity, real impact, reproducible steps.

CRITICAL

Authentication bypass via self-signup role escalation

ASSET
app.[redacted].com
CVSS
9.1
STATUS
Fixed & retested

Impact. A self-registered user was automatically granted a privileged role, landing directly in the internal dashboard with access to other tenants' data.

Steps to reproduce.
  1. 01POST /api/signup with a fresh email
  2. 02Server assigns a privileged role by defaultHIGH
  3. 03GET /dashboard → full access, no invite required
  4. 04Enumerate /api/records?org=* → cross-tenant dataCRITICAL

Remediation. Default new accounts to an unprivileged role; gate role assignment behind an admin invite; enforce tenant scoping on all data endpoints.

AI-ready fix prompt

Paste into Claude Code, Cursor, or Copilot to implement the fix.

In our signup flow, new accounts are auto-assigned a privileged role and can reach the internal dashboard without an invite. Change registration so new users default to an unprivileged role, require an admin-issued invite before any elevated role is granted, and add a server-side tenant-scope check on every data endpoint so a user can only read their own organization's records. Then add tests covering: (1) a fresh signup cannot load the dashboard, (2) role escalation requires an invite, (3) cross-tenant reads return 403.

Authorized testing only. BugCanary operates strictly under signed scope and responsible-disclosure terms.

9
Client engagements & bug bounty programs
25+
Critical & high vulnerabilities found
100%
Findings shipped with a working PoC
48h
Turnaround on critical alerts
// what we do

Depth over noise.

Every engagement is hands-on. No box-ticking scan dumps — only findings we can prove and you can reproduce.

Proactive discovery

We hunt the vulnerabilities scanners can't reason about: auth bypasses, IDOR, broken access control, and multi-step exploit chains.

Web app & API testing

Deep manual testing of your apps, APIs, and business logic — the flows where real money and real data move.

Responsible disclosure

Clear, reproducible reports with severity, impact, and a step-by-step fix. Written for engineers, summarized for execs.

Free retesting

Once you ship the fix, we verify it. No finding is closed until it is actually closed.

// how it works

From scope to fix in four steps.

  1. 01

    Scope & authorization

    We agree on targets, rules of engagement, and a signed authorization. Everything stays in-scope and above board.

  2. 02

    Recon & hunt

    Deep reconnaissance and manual testing across your attack surface — the parts automated tools skip.

  3. 03

    Prove & report

    Each finding ships with a working proof-of-concept, business impact, and a concrete remediation path.

  4. 04

    Fix & retest

    We support your team through remediation and retest for free until the issue is verified closed.

// why bugcanary

Most teams never get told.

Real, exploitable bugs sit undiscovered in production every day — because nobody goes looking with an attacker's mindset. We do the extra effort no one else does.

  • We hand you the fix, AI-ready.

    No one else does this: every finding comes with a copy-paste prompt your engineers drop straight into their AI coding assistant (Claude Code, Cursor, Copilot) to implement the remediation — turning a report into a shipped fix in minutes.

  • Manual, not just automated.

    Scanners are step one. The critical findings come from human reasoning about your logic.

  • Exploitable or it doesn't ship.

    Every report entry has a PoC. No theoretical, informational filler.

  • Built for any size.

    From pre-launch startups to established platforms — the engagement scales to you.

  • Strict isolation & ethics.

    Per-target isolation, signed authorization, and responsible disclosure on every job.

// let's talk

Find out what's already exposed.

Tell us your target and scope. We'll come back with an approach, a timeline, and a fixed price — no obligation.

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